llvm/test/Transforms/InstCombine/memmove.ll
2004-10-12 04:51:55 +00:00

24 lines
704 B
LLVM

; This test makes sure that memmove instructions are properly eliminated.
;
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'call void %llvm.memmove'
%S = internal constant [33 x sbyte] c"panic: restorelist inconsistency\00"
implementation
declare void %llvm.memmove(sbyte*, sbyte*, uint, uint)
void %test1(sbyte* %A, sbyte* %B, uint %N) {
;; 0 bytes -> noop.
call void %llvm.memmove(sbyte* %A, sbyte* %B, uint 0, uint 1)
ret void
}
void %test2(sbyte *%A, uint %N) {
;; dest can't alias source since we can't write to source!
call void %llvm.memmove(sbyte* %A, sbyte* getelementptr ([33 x sbyte]* %S, int 0, int 0),
uint %N, uint 1)
ret void
}